Is there a way to avoid the prompt"file xxxxxx open error!" (where xxxxx is some open file).I am confident this is because they are in use.I am running it on a PC and backing up the C: drive to an isz (compressed ISO) file.I am using newest version (I bought/downloaded today). version 8.6.6.2180Suggestion #1: put in an option to ignore files that cannot be opened.Suggestion #2: I could use built in NTbackup and then ultraISO could have a conversion feature to convert microsoft's BKF file format to ISO.